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    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        /* 给一段文章中的全部指定词语进行过滤
// 比如我要过滤 "SM"

var str = 'asdasdSMasdasdasdSMsdasdasdSMsadasd'

// 需要结果
// asdasd**asdasdasd**sdasdasd** */
      var str="asdasdSMasdasdasdSMsdasdasdSMsadasd"
      for(var i=0;i<3;i++){
        var str=str.replace("SM","*")
      }
      console.log(str);
    </script>
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